Fitbit Charge 2 Black Large Activity Tracker - FB407SBKL

PurePulse Heart Rate/ Multi-Sport Modes/ Connected GPS/ Cardio Fitness Level / SmartTrack/ All-Day Activity Tracking/ Reminders to Move/ Smartphone Notifications/ Auto Sleep Tracking And Silent Alarms/ Hi-Res Tap Display/ Interchangeable Bands/ Long Battery Life/ Wireless Syncing/ 3-Axis Accelerometer/ Size Large/ Black And Silver Finish